Family Rearrangements
Mostrando 1-12 de 184 artigos, teses e dissertações.
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1. Repetitive DNAs and shrink genomes: A chromosomal analysis in nine Columbidae species (Aves, Columbiformes)
Abstract An extensive karyotype variation is found among species belonging to the Columbidae family of birds (Columbiformes), both in diploid number and chromosomal morphology. Although clusters of repetitive DNA sequences play an important role in chromosomal instability, and therefore in chromosomal rearrangements, little is known about their distribution
Genet. Mol. Biol.. Publicado em: 19/02/2018
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2. Identifying Mazama gouazoubira (Artiodactyla; Cervidae) chromosomes involved in rearrangements induced by doxorubicin
Abstract The process of karyotype evolution in Cervidae from a common ancestor (2n = 70, FN = 70) has been marked by complex chromosomal rearrangements. This ancestral karyotype has been retained by the current species Mazama gouazoubira (Fischer 1814), for which a chromosomal polymorphism (Robertsonian translocations and the presence of B chromosomes) has b
Genet. Mol. Biol.. Publicado em: 05/06/2017
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3. Caracterização de um grupo de pacientes em risco para câncer de mama e ovário hereditários quanto a presença e frequência de rearranjos gênicos em BRCA
Breast cancer is one of the most common malignancies affecting women worldwide. In Brazil, the State of Rio Grande do Sul has incidence rates and mortality from breast cancer are among the largest in the country. Approximately 5-10% of the cases are caused by germline mutations in predisposing genes including BRCA1 and BRCA2 are associated with the syndrome
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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4. Citotaxonomia de arraias de água doce (Myliobatiformes, Potamotrygonidae) da Bacia Amazônica Central
The family Potamotrygonidae in the order Myliobatiformes comprises all the Neotropical freshwater ray species. The knowledge about this fish group is limited, for example, the species number is uncertain, some species names are questionable, there is no information about how their diversification in freshwater happened, and there are no studies about their r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/10/2011
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5. De volta para a casa: a inserção dos retornados à cidade de Criciúma/SC (1995-2009)
Nas últimas décadas do século XX o Brasil despontou no cenário das migrações internacionais. Os brasileiros partiram incentivados por diversos fatores, sendo que muitos migraram por conta das crises que assolavam o país. Grande parte destes brasileiros escolheu como destino migratório os Estados Unidos. A intensidade dos fluxos migratórios de alguma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011
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6. CitogenÃtica em peixes de cabeceiras de dois riachos pertencentes à bacia do Alto rio ParanÃ, regiÃo de Toledo (PR) / Cytogenetic in fishes from two headwaters streams belonging to the Upper Paranà river basin, Toledo (PR)
Cytogenetics studies were carried out in two genera of fishes from Pindorama and Lopei streams, Upper Paranà River basin, with cytossistematic and ecologic-evolutionary approaches. In Heptapterus mustelinus, the first cytogenetics characterization in the genus was carried out, verifying 54 chromosomes (26m+18sm+4st+6a), which is a diploid number not observe
Publicado em: 2011
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7. Cytogenetics studies in Brazilian species of Pseudophyllinae (Orthoptera: Tettigoniidae): 2n(♂)=35 and fn=35 the probable basic and ancestral karyotype of the family tettigoniidae
The karyotypes of five species of Brazilian Pseudophyllinae belonging to four tribes were here studied. The data available in the literature altogether with those obtained with species in here studied allowed us to infer that 2n(♂)=35 is the highest chromosome number found in the family Tettigoniidae and that it is present in species belonging to Pseudophy
Neotropical Entomology. Publicado em: 2010-08
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8. Cytogenetic analysis of three sea catfish species (Teleostei, Siluriformes, Ariidae) with the first report of Ag-NOR in this fish family
Despite their ecological and economical importance, fishes of the family Ariidae are still genetically and cytogenetically poorly studied. Among the 133 known species of ariids, only eight have been karyotyped. Cytogenetic analyses performed on Genidens barbus and Sciades herzbergii revealed that both species have 2n = 56 chromosomes and Cathorops aff. mapal
Genetics and Molecular Biology. Publicado em: 30/04/2010
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9. Cytogenetical studies in five Atlantic Anguilliformes fishes
The order Anguilliformes comprises 15 families, 141 genera and 791 fish species. Eight families had at least one karyotyped species, with a prevalence of 2n = 38 chromosomes and high fundamental numbers (FN). The only exception to this pattern is the family Muraenidae, in which the eight species analyzed presented 2n = 42 chromosomes. Despite of the large nu
Genetics and Molecular Biology. Publicado em: 16/01/2009
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10. Hidden heterochromatin: characterization in the Rodentia species Cricetus cricetus, Peromyscus eremicus (Cricetidae) and Praomys tullbergi (Muridae)
The use of in situ restriction endonuclease (RE) (which cleaves DNA at specific sequences) digestion has proven to be a useful technique in improving the dissection of constitutive heterochromatin (CH), and in the understanding of the CH evolution in different genomes. In the present work we describe in detail the CH of the three Rodentia species, Cricetus c
Genetics and Molecular Biology. Publicado em: 2009
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11. Citogenética evolutiva en Leguminosas americanas
ABSTRACT Chromosomic features described so far for Americans legumes are reviewed and analyzed, simultaneously with morphological and molecular characters. This is an invaluable opportunity to propose hypotheses about chromosome changes during the family divergence and speciation processes. The chromosome studies showed wide inter-generic, inter and intra-sp
Rodriguésia. Publicado em: 2008-07
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12. Use of V H, D and J H immunoglobulin gene segments in Brazilian patients with chronic lymphocytic leukaemia (CLL)
Chronic lymphocytic leukaemia (CLL) is a haematological malignancy for which reliable prognostic markers are needed in view of its clinical heterogeneity. In approximately 50% of CLL patients, immunoglobulin (Ig) rearrangements are modified by somatic hypermutation (SHM), a process that represents a reliable prognostic indicator of favourable progression. In
Genetics and Molecular Biology. Publicado em: 2008